Cigar knife



FIG. 1 is a first perspective view of a cigar knife showing my newdesign;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is a perspective view of the cigar knife in an open configurationthereof.

The broken lines shown in the drawings depict portions of the cigarknife that form no part of the claimed design.

CLAIM The ornamental design for a cigar knife, as shown and described.